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Semmy [17]
3 years ago
13

X-(-5)=-4 What does x equal

Mathematics
2 answers:
forsale [732]3 years ago
7 0

Answer:

-9

Step-by-step explanation:

X = -4 + (-5) = -9

You can always move elements of equality to the other side by changing either their signs or applying opposite operator: addition <-> subtraction, multiplication <-> division

inn [45]3 years ago
5 0

Answer:

x = -9

Step-by-step explanation:

x - ( - 5 ) = - 4

Distribute the negative sign

x - ( - 5 ) = - 4

x + 5 = -4

Inverse operations;

x + 5 = -4

  -5     -5

x = -9

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Given the sequence in the table below, determine the sigma notation of the sum for term 4 through term 15. N an 1 4 2 −12 3 36 t
Rzqust [24]

By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is                    \sum_{n=4}^{15} 5(-2)^{n-1}$$  

<h3>What is sequence ?</h3>

Sequence is collection of  numbers with some pattern .

Given sequence

a_{1}=5\\\\a_{2}=-10\\\\\\a_{3}=20

We can see that

\frac{a_1}{a_2}=\frac{-10}{5}=-2\\

and

\frac{a_2}{a_3}=\frac{20}{-10}=-2\\

Hence we can say that given sequence is Geometric progression whose first term is 5 and common ratio is -2

Now n^{th}  term of this Geometric progression can be written as

T_{n}= 5\times(-2)^{n-1}

So summation of 15 terms can be written as

\sum_{n=4}^{15} T_{n}\\\\$\\$\sum_{n=4}^{15} 5(-2)^{n-1}$$

By applying basic property of Geometric progression we can say that sum of 15 terms of a sequence whose first three terms are 5, -10 and 2 is                    \sum_{n=4}^{15} 5(-2)^{n-1}$$  

To learn more about Geometric progression visit : brainly.com/question/14320920

8 0
2 years ago
Jim has a membership to a comic book club. He pays $9.00 per month for membership and $2.50 for each comic book he purchases. Wh
tamaranim1 [39]
The answer is C) the slope is 2.50  and the y-intercept is 9, assuming the question refers to the parameters of his monthly cost.

His cost function could be described as y= 2.5x + 9, where x is the number of comic books he purchases. If he buys no comic books, he still has to pay the $9 membership fee. 
8 0
3 years ago
Under what circumstances may a health insurer charge a higher premium to a woman with a genetic disposition to breast cancer? a)
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Answer:

D) Health insurers can never discriminate based on genetic information in this way

3 0
2 years ago
Find the Greatest Common Factor of 20, 30 and 55
mixer [17]

Answer:

5

is the answer dont over think it and try plz bc its very easy

8 0
2 years ago
Read 2 more answers
Please help!! Show work please!!
Nonamiya [84]

1. 3x - 2y = 8 Subtract 3x on both sides

-2y = 8 - 3x Divide by -2 on both sides to get y by itself

y = -4 + 3/2x


2. a + b / 3 = 5 Multiply 3 on both sides

a + b = 15 Subtract a on both sides to get b by itself

b = 15 - a


3. 12x - 4y = 20 Subtract -12x on both sides

-4y = 20 - 12x Divide -4 on both sides to get y by itself

y = -5 + 3x


4. y + 3 = -5(x - 2) Multiply -5 to (x-2)

y + 3 = -5x + 10 Subtract 3 on both sides to get y by itself

y = -5x + 7

7 0
2 years ago
Read 2 more answers
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